Concentrator.



PATENTE!) 00T. 1a, 1904.-

T MM ST .m AM HU AP'PLIOATIOH FILED AUG. 14,1903.

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Patented october 18, `1904..

PATENT CFFICE.

CHARLES A. SMITH, OF LOS ANGELES, CALIFORNIA.

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SPECIFICATION forming part of Letters Patent No. 772,540, dated October 18, 1904.

l Application led August 1.4, 1903. Serial No. 169,529. (No model.)

To all whom it may concern,.-

Be it known that I, CHARLES A. SMITH, a citizen of the United States, residing at Los `Angeles, in the county of Los Angeles and State of California, have invented new and useful Improvements in Concentrators, of Which the following is a specification.

The object of my invention is to provide convenient and economical means to remove the concentrates from the gangue while in a wet state. I accomplish this object by means of the device herein described, and shown in the accompanying drawings, in which- Figure l is a plan view of a concentrator embodying my invention. Fig. 2 is a side elevation thereof. Fig. 3 is a transverse section taken on line 3 3 of Fig.v 1. Fig. 4 is an enlarged section of a fragment of the concentrating-table with the diverting-riiiie se# cured thereon. Fig. 5 is an enlarged crosssection of the slide-gate, taken on line 5 5 of Fig. 6. Fig. 6 is alongitudinal section of thel slide-gate.

In the drawings, A is the rectangular concentrator-frame.

B is the concentrator-table, suspended in the frame by the pivoted supports D and D', and is. provided with the usual means to im'- part thereto a shaking motion through the driving-pulley C. This table has an inclination downward vfrom the head B to the tail end B thereof and is highestv in its center, as shown in Fig. 3, the table sloping downward in both directions from the center. Disposed along the center I have provided a number of discharge-ports E. These ports are arranged to be closed by the slide-gate F. On each side of the center of the table and running therefrom on an incline from the outer edge of the concentrator-table and toward the center in the direction of the foot of the table and terminating at a point in close'proximity tothe center of the table are a number of concentrator-rifiles Gr, the purpose of which is to carry the concentratable portion of the pulp toward the center of the table when motion is imparted thereto, that the concentrate may pass down through the discharge-ports E into the concentrates-trough H, which is removably secured below the concentrator-table and adapted to catch the concentrates as they pass through the discharge-ports E. -These rifHes are thickest at the end, terminating at the point adjacent to the center and gradually becoming thinner until the edge of the concentratortable is reached. The inclination upward of the table from the sides thereof vto the center will have a tendency to carry the light material in the pulp from the center toward the sides; but the shaking motion of the table, to.- gether with the inclination of the riflies from the edge of the table toward the center and downward from the head to the tail, will have a tendency to carry the concentrates in the direction of the center of the table and deposit lthe same in the center, so that they will pass off through the discharge-ports E. These central discharge-ports E are closed by the slide-gate F, provided with the pivoted handle I, to which the connecting-linkJ is pivoted at one end and pivoted to the slide-gate at the l 'over the rim M thereof onto the head B of theptable. The rocking motion of the table and the inclination downward thereof from the head to the tail will cause the pulp to pass down over the riiiies on the top of the table, the concentrates passing to the concentratortrough H through the discharge-ports E as it works its way from the head to the tail-of the table. By this arrangement as soon as any portion of the substance operated on is properly concentrated it will immediately pass through the discharge-port firstreached into the concentrator-trough and-relieve the concentrator-table of so much of the concentrates as pass therefrom, increasing thereby the capacity of the concentrator.

Having described my invention, what- I claim as new, and desire to secure by Letters Patent, is-

The herein-described concentrator-table roo elevated in the longitudinal center thereof, and having ports in its longitudinal center; rfles on the top of -the table leading downwardly from the sides thereof to a point adjacent to the center; the riles being low at the outer end and high at the inner end; and

means to regulate the openings in the center for the discharge therethrough of the concentrates from the table as they are separated 

